12020202211 has 4 divisors (see below), whose sum is σ = 12020477032. Its totient is φ = 12019927392.

The previous prime is 12020202209. The next prime is 12020202221. The reversal of 12020202211 is 11220202021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12020202211 - 2¹ = 12020202209 is a prime.

It is a super-2 number, since 2×12020202211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020202191 and 12020202200.

It is not an unprimeable number, because it can be changed into a prime (12020202221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55545 + ... + 164698.

It is an arithmetic number, because the mean of its divisors is an integer number (3005119258).

Almost surely, 2^12020202211 is an apocalyptic number.

12020202211 is a deficient number, since it is larger than the sum of its proper divisors (274821).

12020202211 is an equidigital number, since it uses as much as digits as its factorization.

12020202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274820.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12020202211 its reverse (11220202021), we get a palindrome (23240404232).

The spelling of 12020202211 in words is "twelve billion, twenty million, two hundred two thousand, two hundred eleven".